43455 has 8 divisors (see below), whose sum is σ = 69552. Its totient is φ = 23168.

The previous prime is 43451. The next prime is 43457. The reversal of 43455 is 55434.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43455 - 2² = 43451 is a prime.

It is a plaindrome in base 8.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (8694).

2⁴³⁴⁵⁵ is an apocalyptic number.

43455 is a deficient number, since it is larger than the sum of its proper divisors (26097).

43455 is a wasteful number, since it uses less digits than its factorization.

43455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905.

The product of its digits is 1200, while the sum is 21.

The square root of 43455 is about 208.4586289891. The cubic root of 43455 is about 35.1571167688.

Subtracting from 43455 its sum of digits (21), we obtain a palindrome (43434).

Adding to 43455 its reverse (55434), we get a palindrome (98889).

The spelling of 43455 in words is "forty-three thousand, four hundred fifty-five".